Device not turning on, internal power supply works but PMU IC gets hot

Hello everyone,

a few days ago an Apple TV 4th gen came in and I've been attempting at perhaps fixing it up. Of course, it does not power on, and connecting it to a PC or Mac by USB-C did not show any signs of life either. The background of the device is unclear, so I cannot state whether it was dropped or how exactly it stopped working. Opening it up and probing around made me come to some conclusions:

- The internal power supply still works and is delivering its supposed 12 Volts

- The main pcb shows no signs of water damage or any other type of damaged/discolored components

- Hooking the main pcb up to 12 Volts on a power supply shows that it draws about 130-170mA

- One specific IC, the 338S00057, which barely has any information on the internet about it, is getting rather warm/hot when hooking the pcb up, since this IC is probably responsible for sustaining several power rails, I was thinking perhaps a certain rail is shorted to ground, however a short would result in a much greater current draw, so I am not sure

- The IC might also be a memory controller, as its part name is similar to the 2015 Retina Macbooks Memory controller 338S00055

The IC marked in green is the one getting hot.

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As there are no schematics for Apple TVs and these issues rarely occur, I am not expecting this to be fixable. Someone suggested to check the CPU clock crystals, but I can neither buy replacements of them or read them out because I dont have an oscilloscope.

Suggestions would be great, thanks in advance!

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